Monolithic Power Systems Inc. EV2720-RH-00A

Overview

EV2720-RH-00A from Monolithic Power Systems is an evaluation board for the MP2720GRH - a fully integrated, I²C-controlled, 2.5A NVDC buck charger IC targeting single-cell Li-ion/Li-polymer battery systems. It supports input voltage from 4V to 6.3V, delivers up to 2.5A charge current, enables USB OTG boost (5–5.35V/3A), and implements JEITA-compliant thermal regulation with dual NTC inputs.

For engineers reviewing the EV2720-RH-00A datasheet, EV2720-RH-00A pinout, EV2720-RH-00A application, or EV2720-RH-00A equivalent, this board provides full register-level control via I²C, real-time status monitoring (STAT/IB, PG/NTC2), configurable charging profiles, and hardware-ready connections for VIN, SYS, BATT, and USB Type-C.

Technical Context

The EV2720-RH-00A implements the MP2720GRH's narrow-voltage DC (NVDC) architecture, enabling independent system power and battery charging paths with automatic power-path prioritization. Its QFN-22 (2.5mm × 3.5mm) IC integrates synchronous buck switching, input current/voltage regulation, and dual NTC-based temperature sensing with programmable windows.

Board-level features include on-board USB Type-C interface, jumper-configurable NTC dividers (JP2/JP3), LED status indicators (STAT/IB, PG/NTC2), and test points for all critical signals (SW, PMID, INT, BST, BATTSNS). The default configuration sets 4.2V charge termination for Li-ion chemistry.

Key Specifications

Availability

EV2720-RH-00A is available at Aetrix Electronics and suitable for portable medical devices, industrial handhelds, and USB-C powered IoT edge nodes requiring stable component supply, rapid prototyping validation, and production-grade battery management reference design.

Supply support for EV2720-RH-00A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with core expertise in DC/DC conversion, battery management, and motor drivers for consumer, industrial, and automotive applications.

The MP2720 product line delivers highly integrated, I²C-programmable single-cell chargers optimized for space-constrained, thermally sensitive applications such as wearables, Bluetooth headsets, and compact power banks where NVDC architecture and JEITA compliance are mandatory.

FAQ

What software and hardware are required to operate the EV2720-RH-00A?

The board requires the official MP2720 evaluation software installed on a Windows PC and the EVKT-USBI2C-02 USB-to-I²C communication interface. All connections - including VIN, BATT, SYS, and I²C lines - must be correctly wired per the Quick Start Guide. Green status indicators in the GUI confirm successful enumeration and register access.

Does the EV2720-RH-00A support USB BC1.2 detection without external components?

Yes. The onboard MP2720GRH implements BC1.2 and proprietary adapter detection algorithms internally. No external D+/D− resistors or dedicated BC1.2 ICs are needed - the USB Type-C connector (P1) and internal firmware handle source identification automatically upon VIN application.

Can the EV2720-RH-00A be used to validate JEITA-compliant charging behavior?

Yes. The board supports full JEITA profile configuration via I²C registers, including independent hot/cold temperature thresholds, charge enable/disable actions, and recovery hysteresis. JP2 and JP3 route on-board 10kΩ NTC dividers to NTC1 and NTC2 pins, enabling direct thermal loop validation with standard NTC thermistors.

What is the purpose of the BST and PMID test points on the board?

TP10 (BST) provides access to the bootstrap capacitor node for gate-drive voltage measurement and stability analysis. TP1 (PMID) monitors the internal power rail that supplies the high-side MOSFET driver and analog circuitry - critical for diagnosing startup faults, overvoltage conditions, and regulator dropout during transient load steps.

Is the EV2720-RH-00A compatible with lithium iron phosphate (LiFePO₄) batteries?

No. The default firmware and hardware configuration target Li-ion/Li-polymer chemistries (4.2V termination). While register-level adjustments can modify charge voltage, the MP2720GRH datasheet specifies 4.0V–4.45V VBAT range and does not characterize or guarantee performance with LiFePO₄'s 3.65V typical termination or different CC/CV profiles.

How do I configure the board for boost (OTG) mode?

Apply 5–5.35V to the IN pin (J3/SYS) while keeping VIN (J1) unpowered or below 3.6V. The MP2720GRH automatically enters boost mode when SYS voltage exceeds VIN and battery voltage is ≥3.0V. Confirm operation via I²C register 0x09 (STATUS2) bit 4 (BOOST_OK) and measure output at J3 with a load ≤3A.